Type-writing machine.



i. A. WHTooMB.

TYPE WRITING MACHINE.

LQJE

Patented Jan. 26, 1915.

4 SHEETS--SHEET 2.

J. A. WHTGOMB.

TYPE WRITING MAHINE.

APPLICATION NLED JULY 14,1910.

J. A. WEITGOMB.

TYPE WRITING MACHINE.

APPLIGAToN FILED JULY 14.1910.

Patented Jam. 26, 1915 4 SHEETS-SHEET 4.

unseen sirenes TYPE-WRITING MACHINE.

Application filed July le, 1910.

To all whom it may concern a citizen oi' the United States, and aresito provide a construction 'torta typewriting dent of the city of McAlester, in the count7 oiE Pittshur', State of Oklahoma, have in.- vented certain new and useful` improvements in/Type-VvritingMachines, of which the following is a specification.

rThis invention relates broadly to typewriting machines and more specifically' to platen shitting mechanism for typewriting machines, wherein the platen is shifted to upper and lower case printing positions through the segment Otan are.

The principal object of this invention is machine of the folding type in which the carriage and attendant mechanisms .are n'iounted in the machine Jframe in such manner as to be folded over to abnormal position yand the construction of parts being such that the pivotal point about which the carriage 'is folded trom normal to abnormal positions, "becomes the pivotal point about which the carriage is shifted when it is moved from lower vcase printing position to capitals or to a third printing position for. figures and characters.

A further object of the invention is to construct a typewriting machine in such manner that the platen isshii'ted through a segment or' an arcwhen-it is moved from one printing position to another, the radius of said are being substantially 'one-halt the length ot the typewriting machine frame.

Another object of the invention is to construct a typewriting machine of the folding type in such manner that the side bars upon which the carriage is supported, are pivotcd to the upper middle portion of the machine frame in such manner as to permit Athe platen and carriage mechanism to he 'folded to abnormal position and the construction ot' parts heilig such that the side hars are moved through a segment of an are when the carriage is shifted from one printing position to another.

further object ot the invention is to construct n. tvpewriting machine in such manner that the carriage is moved from one printing position to another by means of pivoted supports located substantiall.7 at the upper middle portion oi the sides of the machine frame, and counterbalaneing springs on each side of the machine frame having Specification of Letters Fatent.

Patented Jan. 26,19l5.

Serial No. 571.963.

operative connection with the pivoted supports upon which `the carriage yis moved trom one printing position to another.

' A lstill further object of the invention is to construct a typewriting machine in which the carriage-is adapted to occupy a pluralityr of printing positions and having each printing position, other than the normal printmg position, determined by adjustable cam controlled stop screws.

stillfurther object ot' the inventionis to construct a typewriting machine in such manner that the carriage is adapted to occupy a plurality or' printing positions, shift keys Jfor moving the carriage from one printing position to another, and one of the shift keys being constructed to change the relation of the stops and simultaneously lift the carriage mechanism.

A still further object of the invention is to construct a typewriting machine in such manner that the platen carriage may assume a pluralit;Y of printing positions and he locked in each printing position, the lock-- ing mechanism being constructed in such manner as to support in locked position each ot the carriage supporting links.

Still further objects of the invention will in part be obvious and will in part be pointed out in the specification, by reference to the accompanying drawings and will be more specifically deiined in the claims hereinafter following'.

Throughout the specification and the several figures of the drawings, like numerals have been used to indicate like parts.

ln the drawings z-Figure l` is a sectional elevation taken on lines A-B of Fig. 3, and showing the platen shifting mechanism at the left of the machine frame in its normal position. Fig. 2 is a view similar to Fig. l, with the exception that the platen shifting mechanism is shown in its extreme elevated position. Fig. 3 is a transverse cross section taken on lines CRD of Fig. 1, showing the carriage. ribbon, and feed mechanism, etc., in elevation. Fig. is a plan sectional view. taken on lines E'-F of Fig. 3, showing the relationship of the key levers in the machine frame. Fig. is a detail elevation of the locking lever for the shift bell crank on the right ofthe machine frame.

The tvpewriting' machine illustrated in the drawings and to which my platen shift mechanism invention is particularly adapt- 2 ninfa,

ed. is :i typewriting nnrehine olt the folding4 type. :is is indi ated pnrtieuhirlui,Y hy the relutiouship ot parts shown in dotted lines Viu Fig. l o'l the drawings, wherein side .hars l nud L? :ire pivoted to the uppe';i inidrl le pon tion olE the sides ol the nuirhine l'rni'ne 5. hy nienus ol stud holts und (3, respectirely. The side hnrs l und l :rre ndnpted to suiriporl, u carriage hed T, upon which n 'ziirringe lrnl'ne S is inounted l'or reciprocal motion upon niitii`iietion rollers l). 1l) and ll. )t eylindrienl pleiten 1; is mounted in the our ringe 'lrnuio Si. whjiei enrring'e 'freine nlso pro.'ides n mounting Ifor the nsunl pnper leed nieehnnisin 'l l. The elrlindrienl pinten l2, is provided with the usunl line spneintgl ineehnnisin l5, which is iifitliented :it the leit o'l.' the pinten in Fig` il ot lhe drn\\=ing:z. The platen l2 is :riso provided :it its right hnnd end with n turning linoh lo, hen intl". whieh n releasing lever 1T is :adapted to extend in nn upward direction. tihhon spools 1) :ind 20, nre carried upon tht` side hars l and respectively, und :ire provided, with. netufiting meehnnisni whieh eonsists in ratchet wheels 2l und 2; :espeeti f r, the ratchet wheels heiligv engnged h l' actuating dogs which :1re enrried upon netunting lev vers 2 lund 25. t ero s rod 22u, is pimtully mounted het\\'een the sides olf the innehiue t'rnnie i, hy n1 uns o li "tud serewsil? :1nd Qt. and whieh sere-ws :ere i'etnined in definite positions ot znljustnieut hy inenns ol: loel; nuts 29 :uid 3l). 'The rross rod 2(3 is ndnpted to enrr)r platen shi'lft hell crnnl-:s Ill :ind 25:2. The platen shi'tt hell ernnlt 3l is located nenr the right hund side ol the nniehine. .l'rnine and the phiten shi tt hell ernnl; Si). is located in siinihir relationship nnr the left hund side ot the inziehine ll'rnine. .lt eminentingl rod -fl, is enrried between the renr ends ol the plnten shil't hell crnnlts il und 52, :1nd lurins :1 eonnectiiig truss hetu'een the platen hell. ernnks :ind suhstnntinll)7 stillens the pinten shitting structure. Ylhtten shii't links 35 und 53() nre mounted on tue rear ends ot the pinten shift hell ornnlis 251 :ind 3:3 respeetively. The plnten shilt links .n3 :1nd 23th nre provided with elongnted openings 8i', through whieh T-shuped hends integjiul with nnehor studs 38 und Ill), :1re :ulnpted to poss, :ind forni n guiding;r inenns lor ref taining the platen shil't links in proper re lntionship when the. :ni-ringe is shifted to one ol' the severed printing positions. lhloh ol1A the platen shift links 155 und 3G :ire hilfurn cated at their upper ends, und the hil'urtnY tions upon the linlcs nre udnpted to engage studs fl() und lV-1, whieh :ire litedliY u'iountml upon the .side hursl. und i5 respeetirely. rl`he platen shift link 36, is provided :it its upper end with n hitch nieniher Si which ententes the stud fill, thus preventingthe ozlrrit ind attendant Ineehnnisni troni heinlgj :werden lolly swung to 'folding or ulniorinnl position.

fd in proiiler relation i l enrried hy tho 3, nud eoperziting with Ar to retziin it in r f fion in-t n stop ppi.T l5 Yliever linli's -l'l :intl i :ire ezirried upon the einineeting rod, end tlifls l r-lni'iiul in n lontjilptulinnl direction when the plnlen shilt hell ernnlis nre raised in order to shi ll; the enr fe i'roni one printing; posilion to :nivnhei: `he lever linlts Ylf3 und li', :ire guided hy stud nienihers -lS :rnd lil. thm :ire lixeillr inrninted upon hell fr!) :1nd fil, whieh nre pirotnllyinount ed upon hruelels :1nd Si', that nre :lttea-hed to the relu' unlls oll the niuehine trente. rthe hell voulel) :rind il furry ou. their outer ends. si speuslon linlts of) :rnd 3l?. ,l uniiersnl hn' JT. is nl iuslsrhly mounted upon the lower ends ut the suspension links 3i nud 534; ln nnnlns oi puirs ot nrljustintfA 7 nuts- :2H und Jun und is :ulnpted to orerlie the enus ol th. l levers (not shtnrn in the.

limiting "n such nirlinner that the universel mir is nelunted enen time. n printing key lever or sinne lever is deinessed. :t oross hnr liu fxnrried het' een the up f ends of: the lever linln; lll end li'. und ireiintnins the. lever linlcs in pro er lifwfl relntioiu'ihip in suell innnner lhnt a upper eint-J ol" the le.-

linloi l and fli' nre in proper position to ennngre the uetuulingr levers ill :intl QV respiwtiroly. in older to oiluerzite the rihhon i lier lever tnleruin rods Vil. 32 :ind H+ rre. eurried, hetween the side` wulls olf the rino freine und l'urnl pirotnl supports u kers oil they hey hoard (not s amro). [he piraten shil't lil-.Irs f3.3 :Ind (lli, nre e-.irrifd upon tl; lever l'uloruln rods ul :uid U33 i i i The phlten shil't kel-y (35. whhfh is the. hey tlmt puf-;itions the plnten onetime in inlerinrdinte or clip posiliou. enrzu ipon it reni end u connectingr linl: (3T. whit-h operatively eonueets the ii-npT` shi't lieg; who lie phil shil't hell eriinlt 32.2, l\' inl-nus olf :i pin t which uooprintrs with the loaxer end wulls ot :1. l- @il toi-ined in lhe lower end ol' the liulf, llT. 'lille tiff plnten shil'l loir (Sli, is ':nrried upon the. het' li 'u' l'ulernln rod l l m d. und is elnu'neted with the. pinten shilft hell Crunk iii hy menus. ol' i oouneetilr; llink 7l), whirh eoperntes with n pin L enrried hy the platen shil't hell ernnl; :ind `which is :idnpted to ennugge the losser end wnll oli :t slot T13. 'liorined inthe lowerenf-lol' the, linl 7U.

lier ,ererspringijsTlnnd 73, nre nttzielied lo :i type hnr st 7V: und enjrnfl'e the. phlten shil't keys (3.2 :1nd (lf3 respeeii `ly. in order lo niniutviu llil` pinten shil't lie/'s in noi-unil llosiliou. Viront hovrd T7, is mounted lor u :1rd olt the her lower .springs 74 :intl T5 :ind the type hrir rest i'li :ind extends hetweeu tho side wnlls ol` the nulehino lrnnie in order to protect nud eoror up the more doliente. portions of the` typewriter lrej/ lever enn- 'an.d, 2.. The adjustable stop 85, isheld di rectly'in the path of the abutting shelf 88,

struction. Brackets in, are liiiedly mounted on each side of the machine frame beneath the,v type bar rest '7.6, and form abutments ijvherein adjustable anchors 79 hold one end of, each of t'z'o counterbalancing coiled springs SO, vwhichat their other ends are :.fside' of thel machine frame, and carries upon its vupper ends adjustable stop members 84 and 85. A cam face 86, is formed upon the vfront portion of the cam actuating stop member 81, and is adapted to rest against a cam actuating pin 87, that is carried by the outer end of the iig shift lever 66. An abutment shelf 88, is formed upon the 'forward' edge of the platen shift link 36, and is adapted to Contact with either of the adjustable stops'S/l yor 85, dependingu upon which of the said stops is positioned in the path of the abutting shelf. When the cap shift key is depressed, the loi/ver wall of the link 67 contacts with the pin 65, and

.the bell cranks 31 and 32 are lifted, since they are both formed integral with the cross rod 26,and the platen is lifted to intermediate leap l position by means of the platen shift links and 36 coperating; with the studs and 41 carried upon the side bars 1 upon theh shift link 36, by means of the leaf spring 89, which is attached to the rear wall ofthe machine frame and presses against the rear edge of the cam actuated stop memberfEll,A lll/'hen the figr shift key is de pressed, the bell cranks 31 and are raised through .the connecting link 70, which contacts with the pin 7l, and the platen carriage is moved upward by the members which have hereinbefore been described in connection with the lifting of the platen carriage, by the f cap shift key. As the iig shili't key is depressed, a cam actuating pin 8T,

rides v,over the cam face Sli on the cam actuated stop member, swinging the stop member rearwardly about the pivot 82, until the adjusting stop 84 is positioned in the path of the abuttingr shelf SS. rlhe contact of the abutting shelf 88v and the short adjust able stop 84, determines the position of the platen with reference to the printing positionfor characters, numerals. etc. t will be noted that the platen shiftbell cranks 3l carriage isshifted-to either of the shifted positions which it is adapted to occupy, it will be noted that it shifts upon the side ba rs 1 and Q as they swing upon the pivotal stud bolts 5 and 6, and thus the carriage is shifted through an arc the radius of which is substantially the length of a type bar in the machine, or substantially one-half the length of the side of the machine frame.

lt will also be noted that the carriage shifts when beingx moved from one printing position to another, about the saine pivotal point around which the carriage is adapted to swing when being folded from normal to abnormal position in order that the machine frame may be packed in small compass for purposes of transportation. luring the time when the carriage is shifted from one printing position to another, the side bars 1 and 2 lie between extensions 91, which are formed upon the rear portions of the side members of the machine frame ltwill be noted vthat the platen shifting structure is very strong, and that the platen is definitely and positively guided during the change of position from one printing position to another, and is ixedly held in definite positioh in either of the printing positions.

in using a typewriter it frequently becomes desirable-that the platen carriage may be definitely locked in any one of the shifted' positions, and in order to accomplish this function l have provided a locking member on the sides of the machine frame. An actuating lever 9:2, is hxedly mounted upon a cross rod 94, which is pivoted to turn upon bearings arranged in the machine frame. The lower end of the actuating lever is l,

iormed in the nature ot a bell crank having wedge faces 95 and ll formed thereon, which are adapted 'to engage. a locking pin 97, lixedly mounted upon the platen shift bell crank 32. The cross rod ill, is curved downwardly as at 9S and lll, in order to pass under the key levers (not shown) in such manner as not to interfere with their action, and

carries on the end opposite to the locking lever 592. a lockingT member lllOfthe construe tion of which is substantially the same as the lower portion of the locking lever 92, and is formed with .vedg'e faces lill and 103, which are. adapted to engage a lockin pin 104, that is carried upon theI bell cran i 3l. Since both the locking lever lr.) and the locking' member 100. are fixedly mounted upon the cross rod ll-l. the)Y will simultaneously engage with the locking' pins UT aud 10ithus supporting ear-l1 .side of the platen carriage iu u definite locking' relation with refn ereuce. to either of the platen shift positions. l'leretofore in machines of this type. the platen has been locked at dilferent printing,r levels by lockingr only the mechanism which is adapted to support one end ol the carriage hed. ln such construction the weight of thc carriage bed and mechanisms mounted there Al O upon, sutlicient to cause the other end o't the carriage hed to drop a small degree belon1 printing level. 'ilhc result ot' this is to spoil the vertical alinen'ien't oi: printing. In the construction which l have herein doscriliod and shown in the drawings, it will he noted that each end ot the carriage bed is positirelir locked and supported in either ot the printingl levels to which 'the platen may be shi'lted, and thus it will be seen that this mechanism olniates the dropping olli the can ringe hed due to the fact that one` si de not luisiliirolji,T supported when the platen is locked in one ot' the higher ininting levels.

llaring" thus described my invention what l claim as non' and desire to secure h v Letters Patent ist-- l. .ln a tyijazwriting machine oit' the Ytoldinn' type in'rombination. a` machine trame. side hars pirotcd to the upper middle portion ot' said machine trame. a carriage hed carried hy said sido bars. a platen carriage mounted tor reciprocal motion ou said car-- riagi'e lied. a` platen niounted in said platen carniagle. and keiv actuated means `for shiftiugi' said side bars in ordrr that the platen mai he moved to di lereiit printing lmsitions i. ln a trpewritin; machine ot the Y[zolding type in conihination. a machine lramc. side liars pirotsdlr mounted on the upper middle portion ol said machine trame. a carriage hed carried upon said side bars. a platen carriage mounted for reciprocal motion upon said carriage hed. a platen niounted in said platen carriage. ke)Y hoard mecha? nism Vtor swinging` said side hars to more said platen to Various printing positions. and means lor limiting' the distance through which said side liars are moved.

3. ln a typewritinp; machine ot the told nur type in combination. a machine trame. side hars` pirotalliy mounted llpon the upper middle portion ot said machine trame, a carriage hed carried by said side bars, a platen carriage mounted 'lor reciprocal increment upon said carriage bed.. a platen numnled in said platen carriage. ker operated mechanism lor moving said side bars to more the platen to a definite printing position. and a secoml key operated mech auism tor n'loi'inp; the side hars to more the platen to a second delinite printing;r position.

l, ln a` lylazwriting;- machine ol the Fold in a` typr in combination. a` machine frame. side hars piroted to the upper middle porv tion ol' said machine trame. a carriage lied carried by said side harsq a platen carriage mounted Vtor rceiprmlfal motion upon said carriage hed. a platen, mounted in said platen carriage, hell cranks mounted in said machine trame` shilt links oiniratirely conmating' said lil-ll cranks and said side hars. c alnterlialamiug springs anchored lo said machine lrame and attached to said bell cranks. and ker operated nic-.ins for shitting mea-iw said bell cranks to move the platen to difilerent printing positions.

5. lu a typewriting machine, the combination ot' a machine frame, a carriage bed, pivotal carrying means for said carriage bed,A said pivotal means being attached to the machine frame and extending substantially one-hall? the length thereof, a platen carriage mounted for reciprocal movement upon said carriage bed, a platen mounted in said platen carriage, kei7 actuated means Ali'or shittingr said platen from one printing lerel to another, the construction and arrangement oi parts being such that the platen moves through a vertical are, the radius of which is substantially one-half the length ot the machine frame when the platen is shifted from one printing level to another.

(1. In a` typewriting machine of the fold ing type, the combination ot' side bars pivoted to the machine frame, a carriage bed mounted upon said side bars, a platen carriage mounted for reciprocal movement upon said carriage bed, a. platen carried by said platen carriage. and key actuated moans in operative vrelation to said side bars when they are in normal printing position, to more said side hars in such manner as to translate the platen from one printing level to another, substantially as described.

7. ln a typewriting machine in combinaf tion, a machine trame, bell cranks mounted in said machine frame, a carriage bed pivotally mounted upon said machine frame, a platen carriage mounted upon said carriage bed, a platen carried by said platen carriage links operatively conncctin said bell cranks with said carriage bei counterbalaneingr springs having one of their ends anellored to the machine 'frame and the other one ot.' their ends attached to the bell cranks. a shift keyv operatively connected with one of said bell cranks in such manner as to shi'lt the said platen carriage from one printingr level to another, and a second shift ker operati\'el \T connected with one of said hell cranks in such manner as to shift the platen carriage to a diferent printing level` S. In a typeuriting machine in combination. a machine frame, a carriage bed pivotally mounted on said machine frame, o. platen carriage mounted upon said carriage hed. a platen. mounted upon said platen carriage, bell cranks mounted in the machine lrame. shi'lt links operatively connecting said bell cranks with said platen carriage, eonnterbalancing springs attached to the machine lrame and to the bell cranks, a key member, a slotted link connecting said key member with one ol said hell cranks, a second key member and a second slotted link ronnelzting said sccom key member with one of said bell cranks. and movable means pivotally mounted cro'ss rod,` hell crank members iixedly mounted upon said cross rod, links operatively connecting said hell cranks with said carriage bed, and key7 `niechanism attached to one oi'c' said hell cranks for shifting said platen from one printing level to another.

l0. ln a typewriting machine in combinationy a machine frame, side hars pivotallj)7 mounted upon'said machine frame, a carriage hed carried by said side hars, a platen carriage mounted upon said carriage hed, a platen mounted in said platen carriage, key actuated means for shitting said side hars through a vertical arc in order to position the said platen in diilerent printing levels, and means integral Twith said machine frame for guiding said side harsy in their vertical movement.

l1. ln a typewriting machine in combination, a machine frame, a carriage bed pivotally mounted upon said machine frame, a platen carriage mounted upon said carriage lied, a platen carried by said platen carriage, vertical links operatively connected with Said carriage hed, a stop formed on one of said vertical links, a pivotall'7 mounted stop carrier, adjustahle stops upon said stop carrier, a cam face upon said stop carrier, kegT actuated means for shifting said vertical links in order to move the platen from one printing level to another, a portion of said key actuated means cooperating with said cam face in order to determine which of said ad justahle stops shall cooperate with the stop on said vertical link when the platen 1s shifted to diderent printing levels.

12. ln a typevvriting machine in combination, a machine frame, a carriage hed pir/'etally attached to said machine frame, a platen carriage mounted upon said carriage hed, a platen mounted in said platen carriage, vertical links operatively connected with said car'- riage hed, a stop formed upon one of said vertical links, a stop carrying member pivotally mounted upon said machine frame, adjustable stops carried by said stop carrying member, a'cani face crmedppon said stop carrying member, key ahtuated means operatively connected With l saidl vertical links for moving said platen to e, second printing,` level, a second key actuat means operatively connected with said niks lor moving the platen to a third prilevel, said second mentioned ke;7 actuated 'means comprising means cooperating with said cam'iace in order 'to position said sten carrying memher in such manner as to etermine the height to which the platen is moved inA arriving at the third printing level. p

13. ln a typevvriting machine in combination, a machine frame, a carriage hed, a carriage mounted for reciprocal motion upon said carrnage bed, a platen mounted'in said platen carriage. vertical shift links operatively connected With the carriage hed near cach end thereof, means for moving said links in a vertical direction in order to move the platen from one printing level to an other` and means for locking each ol said vertical links in their elevated position.

ll. ln a typewriting machine in combination, a machine trame, side hars pivotallv mounted .upon said machine frame, a arriage hed mounted upon said side bars, a platen carriage mounted for reciprocal movement upon said carriage hed, a platen carried by said platen carriage, key-actuated means for shifting said side hars to position said platen in diil'erent printing levels, said key actuated means including vertical shift links operatively connected with said side hars, and means for locking said vertical shift links in either of their4 shifted positions, said locking means includinga key operated stop member.

.15. ln a typewriting machine in combination, a machine frame, side bars pivotally mounted upon said machine iframe, a carriage hed mounted upon said side hars, a platen carriage `pivotally mounted upon said carriage hed, a platen carried by said platen carriage, hell crank members mounted in said machine trame, vertical shift links .operatively connecting said hell crank members and said side hars, lock pins carried by each hell crank member, locking arms adapted to envage said lock pins, and means for actuating Said locking arms, substantially as described.

16. in a typeivriting machine in combination, a machine frame, side bars pivotalluv mounted upon said machine iframe, a carriage hed carried hy said side hars, a platen carriage mounted for reciprocal movement upon said carriage hed, a platen mounted in said platen carriage, a cross shalt rod mounted in said machine trame, bell crank members mounted` upon said cross shaft.; vertical links operatively connecting said hell cranks with said side bars, key actuated means for moving smid hell cranks in order to position said platen in diii'erent printing levels, stop mechanism for determining the vertical movement ci said platen, and locking mechanism coperating with each hell crank order to lock. said platen in any printing level to which it may he shifted.

17. in a typewriting machine in combination, a machine frame, 'side hars pivotally mounted upon said machine frame, a carriage hed mounted upon said side hars, a

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